my sister had a cat who was really good at working out how to open treat containers. He would wait for them to go to sleep, and in the morning, the cupboard would be open, the container open and often laying on its side, and a rather fat and smug looking cat asleep in the wreckage. They ended up having to tie the cupboard closed at night. And that’s when he found out that the tub of crickets for the gecko to eat was not only food for him but a whole box of toys too…